VEVOR 13 pcs Precision R8 Collet Set, 1/8'' - 7/8'', 45# Mill Collet Chuck 0.0012"/30μm TIR with 13 Labeled Storage Boxes, for Milling Machine Drill Presses Boring Machine Machining Center

Standard Size: Our R8 collet chucks are designed to clamp diameters ranging from 1/8" to 7/8". The drawbar thread is 7/16"-20 UNF, and the precision is an impressive 0.0012 in/30 μm, ensuring top-notch accuracy for your machining needs. Internal Thread Design: Our R8 collet chucks feature an internal thread design that makes it easy to tighten end mills. Whether you're cutting keyways, securing double-ended end mills, or tackling any other machining task, our collet chucks handle it with ease. Say goodbye to clamping challenges, boost your work efficiency, and make your machining tasks run smoothly. High-Quality Materials: Our R8 collet chucks are crafted from sturdy 45#, hardened and precision-ground, making them suitable for high-speed milling of precision parts, high-strength grinding, and various machining scenarios. It also ensures the durability of the collet chucks and effectively addresses deformation issues during machining. High Precision: With 0.0012 in TIR, our R8 collet chuck set finds applications across various industries, including aerospace, automotive manufacturing, medical equipment, electronics, and more. It ensures precise machining to meet the high manufacturing standards of these industries. Collet Chuck Specifications: Our R8 collet chuck set includes 13 different collet chuck sizes to accommodate various needs: 1/2 inch, 1/4 inch, 1/8 inch, 11/16 inch, 13/16 inch, 3/16 inch, 3/4 inch, 3/8 inch, 5/16 inch, 5/8 inch, 7/16 inch, 7/8 inch, and 9/16 inch.